Hydrocarbon-burner.



PATENTED FEB. 4, 1908.

S. W. BATES. HYDROGARBON BURNER. APPLICATION FILED APR.11.19Q3.

A? aimw 151% cc. wAsm/vcwrl, u, c.

UNITED OTATES PATENT OFFllCE.

SOLOMON W. BATES, OF PORTLAND, MAINE, ASSIGNOR TO GENERAL HYDROOARBONCOMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

HYDROCARBON-BURNER.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed April 11.1903. Serial No. 152.128.

T 0 all whom it may concern:

Be it known that I, SOLOMON W. BATES, a citizen of the United States ofAmerica, and a resident of Portland, Cumberland county, State of Maine,have invented certain new and useful Improvements inHydrocarbon-Burners, of which the following is a specification.

My invention relates to a hydro-carbon burner of that class wherein theoil is vaporized in a retort and discharged from a needle valve into amixing tube and mixing chamher, then issuing from and burning above aperforated diaphragm.

Burners of this type are commonly used for producing light withincandescent mantles and my invention relates particularly to a burnerof this class for lighting although it is equally well adapted forheating.

In this class of burners it has hitherto been diflicult to regulate theheat to which the vaporizing retort is subjected. The retort has beenheated in two ways, first by the heat of the main flame or flames whicharose from the mantle and second by a subflame which was a smallauxiliary flame formed from jets of flame from a downward extension ofthe mixing chamber into which air and vapor were forced by the internalpressure of the chamber.

My invention resides in a "sub-flame burner so constructed that theamount of heat applied to the vaporizing chamber may be accurately gagedwhereby carbonizing or overheating of the vapor may be avoided.

In my burner the oil is vaporized in a coil wound on an imperforate coilcylinder which is preferably formed in part of insulating material so asto let but a limited amount of heat through and the sub-flame actsagainst the inner surface of this cylinder burning in an annular flamespace formed between the inner surface of the im perforate coil cylinderand the perforated walls of the mixing cham ber or an extension thereof.

I illustrate my invention by means of the accompanying drawing in whichis shown a mantle burner constructed according to my invention. Figure 1is a central vertical section, Fig. 2 is a plan Fig. 3 is a section on70 0c of Fig. 1 and Fig. 4V is a detail section. through the coilcylinder.

A represents the mixing chamber and a a are the burner tubes and a a theperforated diaphragms above which the main flame burns. The mixingchamber is supplied with mixed vapor and air through the mixing tube binthe lower end of which is a vapor discharge nozzle here shown as aneedle valve 6 having a horizontal branch or offset 6 connecting withthe vaporizing coil. The coil (1 is wound on the outside of animperforate coil cylinder 0 which is preferably made up with insulationas shown in Fig. 4 where h and are two concentric cylinders of brass orother metal with a layer of asbestos i between them. The imperforatecoil cylinder surrounds some portion of the mixing chamber, the walls ofwhich are perforated and project flame into the annular space within theimperforate coil cylinder. As here shown, a downward extension of themixing chamber is formed by the tube a which tube has perforations aopening into the annular sub-flame space between the tube a and theimperforate coil cylinder 0. The mixing tube 5 passes through the tube aforming an annular space I) communicating with the mixing chamber aboveand closed at the bottom. The imperforate coil cylinder is secured tothe tube a by screws 5 or other suitable fastenings. A vertical slot fis cut in the lower portion of the mixing tube to allow the offset 6 tobe slid up from the end and a bracket 9 is secured at the lower end ofthe tube to hold the needle valve. An annular alcohol cup f is providedfor starting the burner.

From what has been said the operation of my burner will be evident. Theoil passes from the pressure tank under pressure through. the pipe d andis there vaporized, entering the ollset c and thence into the needlevalve. The vapor mixed with air passes through the mixing tube into themixing chamber thence the greater portion passes through the burners aand burns under the mantles or otherwise if it is a heating burner. Aportion of the mixed air and vapor is forced by the internal pressuredown into the chamber 6 and thence through the perforations a where itburns as a sub-fl ame to heat the coil. The amount of heat in thesub-flame may be accurately regulated by the number of holes in the tubea and the amount of heat reaching the coil may also be regulated by theinsulation of the cylinder. The amount of vapor produced is alsoregulated by the amount of coil. It will be seen that in this way, the

temperature of the oil may be very aocu rately regulated since it isbelow the influence of the main flame and vapor for any number ofmantles from one upward may be made by changing the amount of coil.

The main flame may be of any desired form according to the form of theperforated diaphragm and may be used to heat other things besidemantles.

I claim 1. In a hydro-carbon burner, the combina tion of a main mixingchamber having a perforated outlet for the main flame, a mixing tubeleading to said mixing chamber, a vapor discharge nozzle opening intosaid mixing tube, an auxiliary mixing chamber connecting with said mainmixing chamber and having perforations in the walls thereof, animperforate cylinder surrounding said auxiliary chamber and forming anannular sub-flame space and a coil on said cylinder connecting with saidnozzle.

2. In a hydrocarbon burner the combination of a main mixing chamber,having a perforated outlet for the main flame, a mixing tube leading tosaid mixing chamber, a vapor discharge nozzle opening into said mixingtube, an auxiliary mixing chamber below said main chamber and connectedtherewith and having perforations in the walls thereof, an imperforatecylinder surrounding said auxiliary chamber and forming an annularsub-flame space, and a coil on said cylinder connecting with saidnozzle.

3. In a hydro-carbon burner, the combination of a main mixing chamberhaving a perforated outlet for the main flame, a mixing tube leading tosaid mixing chamber, a vapor discharge nozzle opening into said mixingtube, an annular extension to said mixing chamber surrounding saidmixing tube having perforations in the walls thereof and connecting withsaid mixing chamber, a coil cylinder surrounding said extension formingan annular sub-flame space and a coil on said cylinder connected withsaid nozzle.

4. In a hydro-carbon burner, the combination of a mixing chamber havingflame perforations therein, a mixing tube leading into said mixingchamber, avapor discharge nozzle opening into said mixing tube, animperforate coil cylinder surrounding a portion of said mixing chamberand forming an annular space into which said perforations discharge, anda vaporizing coil on said coil cylinder and connecting with said nozzle.

5. In a hydro-carbon burner, the combination of a mixing chamber havingflame perforations therein, a mixing tube leading into said mixingchamber, a vapor discharge nozzle opening into said mixing tube, a coilcylinder composed of two concentrically arranged tubular metallicmembers having a non-metallic refractory substance between themsurrounding some portion of said mixing chamber and forming an annularspace into which said perforations discharge.

6. In a hydrocarbon burner, the combination of a mixing chamber, amixing tube leading to said mixing chamber, a vapor'discharge nozzle fordischarging vapor into said mixing tube, an imperforate coil cylindersurrounding a portion of said mixing chamber and forming an annularrecess between the two, a vaporizing coil around said cylinder, a mainoutlet to said mixing chamber having a perforated diaphragm,perforations being formed in said mixing chamber for discharging anauxiliary flame into said annular space to supply heat to saidvaporizing coil.

7. In a hydrocarbon burner, the combination of a mixing chamber having amain flame outlet and a plurality of sub-flame apertures, an imperforatecoil cylinder spaced from and surrounding a portion of the mixingchamber and a vaporizing coil arranged outside the coil cylinder.

Signed at Portland, Me, this 9th day of Aprih 19 03.

SOLOMON W. BATES.

Witnesses:

L. M. GODFREY, D. F. OoRsER.

